/* NXP PCF50633 GPIO Driver * * (C) 2006-2008 by Openmoko, Inc. * Author: Balaji Rao <balajirrao@openmoko.org> * All rights reserved. * * Broken down from monstrous PCF50633 driver mainly by * Harald Welte, Andy Green and Werner Almesberger * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. * */ #include <linux/kernel.h> #include <linux/mfd/pcf50633/core.h> #include <linux/mfd/pcf50633/gpio.h> enum pcf50633_regulator_id { PCF50633_REGULATOR_AUTO, PCF50633_REGULATOR_DOWN1, PCF50633_REGULATOR_DOWN2, PCF50633_REGULATOR_LDO1, PCF50633_REGULATOR_LDO2, PCF50633_REGULATOR_LDO3, PCF50633_REGULATOR_LDO4, PCF50633_REGULATOR_LDO5, PCF50633_REGULATOR_LDO6, PCF50633_REGULATOR_HCLDO, PCF50633_REGULATOR_MEMLDO, }; #define PCF50633_REG_AUTOOUT 0x1a #define PCF50633_REG_DOWN1OUT 0x1e #define PCF50633_REG_DOWN2OUT 0x22 #define PCF50633_REG_MEMLDOOUT 0x26 #define PCF50633_REG_LDO1OUT 0x2d #define PCF50633_REG_LDO2OUT 0x2f #define PCF50633_REG_LDO3OUT 0x31 #define PCF50633_REG_LDO4OUT 0x33 #define PCF50633_REG_LDO5OUT 0x35 #define PCF50633_REG_LDO6OUT 0x37 #define PCF50633_REG_HCLDOOUT 0x39 static const u8 pcf50633_regulator_registers[PCF50633_NUM_REGULATORS] = { [PCF50633_REGULATOR_AUTO] = PCF50633_REG_AUTOOUT, [PCF50633_REGULATOR_DOWN1] = PCF50633_REG_DOWN1OUT, [PCF50633_REGULATOR_DOWN2] = PCF50633_REG_DOWN2OUT, [PCF50633_REGULATOR_MEMLDO] = PCF50633_REG_MEMLDOOUT, [PCF50633_REGULATOR_LDO1] = PCF50633_REG_LDO1OUT, [PCF50633_REGULATOR_LDO2] = PCF50633_REG_LDO2OUT, [PCF50633_REGULATOR_LDO3] = PCF50633_REG_LDO3OUT, [PCF50633_REGULATOR_LDO4] = PCF50633_REG_LDO4OUT, [PCF50633_REGULATOR_LDO5] = PCF50633_REG_LDO5OUT, [PCF50633_REGULATOR_LDO6] = PCF50633_REG_LDO6OUT, [PCF50633_REGULATOR_HCLDO] = PCF50633_REG_HCLDOOUT, }; int pcf50633_gpio_set(struct pcf50633 *pcf, int gpio, u8 val) { u8 reg; reg = gpio - PCF50633_GPIO1 + PCF50633_REG_GPIO1CFG; return pcf50633_reg_set_bit_mask(pcf, reg, 0x07, val); } EXPORT_SYMBOL_GPL(pcf50633_gpio_set); u8 pcf50633_gpio_get(struct pcf50633 *pcf, int gpio) { u8 reg, val; reg = gpio - PCF50633_GPIO1 + PCF50633_REG_GPIO1CFG; val = pcf50633_reg_read(pcf, reg) & 0x07; return val; } EXPORT_SYMBOL_GPL(pcf50633_gpio_get); int pcf50633_gpio_invert_set(struct pcf50633 *pcf, int gpio, int invert) { u8 val, reg; reg = gpio - PCF50633_GPIO1 + PCF50633_REG_GPIO1CFG; val = !!invert << 3; return pcf50633_reg_set_bit_mask(pcf, reg, 1 << 3, val); } EXPORT_SYMBOL_GPL(pcf50633_gpio_invert_set); int pcf50633_gpio_invert_get(struct pcf50633 *pcf, int gpio) { u8 reg, val; reg = gpio - PCF50633_GPIO1 + PCF50633_REG_GPIO1CFG; val = pcf50633_reg_read(pcf, reg); return val & (1 << 3); } EXPORT_SYMBOL_GPL(pcf50633_gpio_invert_get); int pcf50633_gpio_power_supply_set(struct pcf50633 *pcf, int gpio, int regulator, int on) { u8 reg, val, mask; /* the *ENA register is always one after the *OUT register */ reg = pcf50633_regulator_registers[regulator] + 1; val = !!on << (gpio - PCF50633_GPIO1); mask = 1 << (gpio - PCF50633_GPIO1); return pcf50633_reg_set_bit_mask(pcf, reg, mask, val); } EXPORT_SYMBOL_GPL(pcf50633_gpio_power_supply_set);